<span lang="EN-US">1.f7+! </span><span lang="EN-US">[1.d7+? Kd8 2.f7 Ra2+ 3.Kb1 Rcb2+ 4.Kc1 Rf2–+] 1...Kxf7 2.d7 Ra2+ 3.Kb1 Rcb2+ 4.Kc1 Rh2 5.Kb1 Rad2 6.d8N+! Kf6 7.Rxd2 Rxd2 8.Nc6 [8.Nb7? Rd5!–+] 8...Rd6 9.Na5 Rb6+ 10.Kc2! =</span>